Question about Cars & Trucks
Hall sensor function
A hall effect sensor is a sensor that produces a square wave output that can be directly read and modulated by the ECM (as opposed to an AC wave sensor which produces a sine wave that must be converted). They are used as cam position sensors and ABS wheel speed sensors.
Hall Effect Sensor and How Magnets Make It Works
Posted on Apr 18, 2017
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Posted on Jan 02, 2017
It's held down by one bolt right above the timing chain cover. It's next to the head that's facing toward the front of the car.
Posted on Feb 06, 2009
The Camshaft Position (CMP) Sensor detects the position of the camshaft in order to identifiy when piston No. 1 is on its compression stroke. The CMP sensor is used for ignition timing in the Ford DIS igntion system, but not in the EDIS igntion system. Both DIS/EDIS use the CMP signal for synchronizing the firing of sequential fuel injectors.
On the 3.0L vulcan engine, the CMP signal is generated by a single Hall-Effect magnetic switch, activated by a single "vane" spinning around by virture of a synchronized shaft which is driven by the camshaft.
The CMP sensor & synchronizer/shaft are located behind the intake manifold (i.e., back near the firewall on a Ranger) on the top of the cylinder block. If you just need to replace the sensor, it is a simple job of unplugging the electrical connector and removing the screws holding the sensor in place. Here is a sketch of the sensor to give you an idea what to look for:
Posted on Feb 27, 2009
It is located under the water pump. Make sure when you remove the sensor that you rotate the crank shaft and look in the hole to make sure the pick up magnet is still in there. Sometimes they come loose and cause a no start or long crank. You will need to have the code cleared still.
Posted on May 06, 2009
SOURCE: camshaft position sensor
The camshaft position sensor is on the rear cylinder head on the left end (the serpentine belt end of the engine - passenger side). It is a son-of-a gun to get at. When it is bad or the connector is intermittant or bad, the symptom will be irregular idle from 500 to 750 RPM or so.
Posted on Aug 22, 2009
when you are looking at the engine pull off the plastic cover on top then the front cover that covers you timing belt there is a wire harness tha goes right to it in the left upper coner two ten mil bolts and it comes off careful not to drop bolts down in belt that could be bad. it is that easy
Posted on Sep 01, 2009
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